Control device



April 14, 1942. p. s. RUSSEL 2,279,582

CONTROL DEVICE Original Filed May l4, l9.

FIG-4:

l; .INVEESR v .4. IATTORNEY I ,outanddistinct1Y claimed.

a part of this specification, I

use; is 1942 B8 PATENT OFFI-CE I 2,219,582 I CONTROL DEVICE Philip 8. Russel, Detroit. Mich slim to Deposition of Michigan Original application May 14. ms,

sisss. Divided and this appiieati 193., Serial No. 12,545

scal -a Cl. ass-44) ,My invention generally to'apparatus' forcontrollingtheeonditionofairinaroomor other enclosed space, and more particularly to 4 the location of the apparatus relative to a'room' wall surface having substantially the'temperamreoftheoutsideatmoeph i' neoftheobiectsofm!inventionistom vide a new and improv d apparatus for maintaining the highest possible relative humidity of the air in aroomorotherenelosedspaoeior outdoor a given mined degree of temperature wall surface.

Another object of my invention is to provide a new and improved apparatus for maintaining a given predetermined desired humidity in a room for all outdoor temperatures above a predetermi ed desree of temperature to prevent dehumidifyingtheairof theroomtoapointin excess of that for comfort.

Another object of my invention is to provide a new and improved mounting to hold an apparatus adjacent a window pane and-yet have the apparatus easily removable from the pane to facilitate cleaning thereof.

Another obiect'of my invention ism provide anew and improved mounting whereby it is possible for the apparatus to be attached to the windowframe and held against the window pane when in use and yet be easily removed so that the window sash can be raised.

Another object of my invention is to provide a new and improved mounting for a control apparatus whereby the apparatus is eiiectively made sensitive to the temperature of a cold surface within a roomgiand easily removed from the cold surface for adjustment or repair.

.The invention consists in the cooperative relation of ariair'conditioning control apparatus with respect to a lieat'transmitting'room vwall surface and the means for eiiecting silch relaall J0 pedeter- 7 without resultant precipitation of the moisture of the room air on a windowpane or other heat transmitting room ,petroit, menus cor- Serial No. on June 8,

Pig. 2 is an enlarged view of part of the apparatus of Pig, 1 and shows the control means of the apparatus as though looking through the window pane;

Fig. 3 is a view showing the control apparatus attached to a window frame and in cooperative relation to the window pane, and

Fig. 4 is an enlarged view in section taken along theline 4-40! Fig.3andinthedirection of the arrows, showing the mounting for and positioning of the control apparatus relative to a window pane. I Referring to the dra ing by characters of reference the numeral i designates generally a control apparatus abutting a window pane 2 and being secured by a plurality of screws 3 to a leaf 4 of a hinge member, generally designated at 5.

, by means of a plurality of screws 1 to a carryins member which may be the window sash I, as shown in Fig. i, or the window casing l,- as shown in Figs. 3 and 4. The hinge leaf 4 is offset, as at ll, so that when the apparatus 1 is in operating position, Ii of the leaf '4 is in a plane parallel to but spaced toward the windowpane 2 from the plane of leaf 6, which is secured to the carrying memher. The hinge leafs l and t are bifurcated at their adjoining or hinged ends to form a plurality ofhinge points or bearings ii. The aperture formed by the bifurcated ends is of sufficient width to accommodate a helical coilg tension spring member 13, ving one-end attached within an aperture ll located between the bifurcated ends of the oifset portion ll adjacent the offset it, and having the other end attached within an,

aperture It located between and adjacent the tion, to. be more fully described hereinafter and the novelty of which will be parti pointed In theaccompanyins drawing, toi ae taken as ha? mu, and clearly illustrated two methods b which my attachment may be made, and one." detail of the construction of the apparatus, in which draw-- Figure 1 is a view showing a control apparatus in cooperative relation to a window pane and embodying my invention;

bifurcated ends of the hinge portion I. when the apparatus is in operating position the spring II has its longitudinal .axis on the window pane 2 side otthe hinge bearing points l2 and is urging the apparatus l against the window pane 2. If the apparatus is rotated clockwise, as seen in Fig. 4, or away from window pane 2, the

- spring member it will pass between the bifurcated ends of the leafs l, i and oppose rotationa1 movement until the longitudinal axis has passed the center of the bearings vl2. Upon movement past the center of the bearings I! the spring member I! will urge the apparatus l in' a clockwise direction and hold it away from the window pane 2. If'the construction shown in Figs. 3 or 4 is used, the apparatus l is out of the path of movement of thewindow sash I so that the sash may be raised without interference that is, against the pane 2, the portion with the apparatus 5. It the construction shown in Fig. 1 is used, then the apparatus is movable with the sash 8 but maybe removed from the window pane 2 to. facilitatethe cleaning of the pane. The control apparatus comprises a mounting board or base .20 having a pair of side spacer members 2| extending perpendicular to .and

spacing the board 26 from the window pane 2, to

form a vertical open ended passageway 22 for the gravity flow of air therethrough.

located within the passageway 22 there is aplura it of control means, of' which one is a. temperat re responsive control comprising a single pole, double throw, thermostatic switch 23 and the other is a hydrometric control comprising a single pole, double throw, humidostat switch 24. The thermostat, 23 comprises a bimetallic, thermostatic element 25 supported at one end by means of a-support 26 attached to the base 26 within the passageway 22. The element is subject to thetemperatureof the air therein, which temperature is substantially equal to the temperature of the inside of the window pane 2. The bimetallic element 25 carries at its free end'fone on either side thereof, a pair of contacts- 21, 28 which cooperate with a pair. of spaced, adjustable "contacts'29, 30. The contacts 29,30 are carried by adjustment screws 3|, 32-adju'stably held in holding members 33, 34 which are secured to the base 20. The contact member 29- is adjusted .by the adjustment screw 3| so that when a given predetermined low temperature pane 2 is reached, contact 21 will be in an electrical circuit making positionwithcontact 29, and contact 36- is so adjusted that with a given predetermined high'temperature the contact 28 will be making an electrical circuit with contact 30. The humidostat 24 comprises an expansibleof the window the contacts 42, 48 will open the electrical circuit therethrough. The stop member 48 is adjusted so that when a predetermined maximum percentage of relative humidity is reached, the contacts 43, 41 will be in an electrical circuit making position and upon a decrease in percentage of relative humidity below this point, the contacts 43, 41 will be in an open electrical circuit position. In usual air conditioning practice, the contacts 43, "will be in circuit making position for all relative humidities above 50% and contacts 42, 46 ,will be in circuit making position for all relative humidities below about 98%. Because of the overlapping of the interrelation of the maximum and minimum relative humidity settings,

will be in circuit making relation and -the arms 44, 45 will not be in engagement with their respective stops 50, 49 but will rock back and forth on their respective pivots according to the move-. ment of lever arm It may easily be seen that when contacts 42, 48 are in open position, arm 45 must be away from its stop 49 and when contacts 43, 4'! are in open position arm 44 must be away from 'its stop 66. Connecting wires 62 are arranged within the passageway 22 and in such a manner that they interfere only slightly with the natural passage of air therethrough and are formed into a cable 53 which extends from the passageway 22. The extended end of the cable 53 terminates at and is connected to a plug 64 whlch'is 'receivedby a socket 65 secured to the contractible, thrust operating, moisture sensitive member 39 responsive to the relative humidity of the surrounding air within passageway 22. The member is supported at one end by a holding member 40 secured to the base 26, and has the other end abutting a lever arm 4| which has one" end pivoted on and for movement in a plane parallel to the base 20. A spring 4| secured 'at one end to the base 20 and at the other end to the lever arm 4|, maintains the position of the arm 1 4| sensitive to changes in relative humidity of the surrounding air. The free end portion of the arm has secured thereto a pair of contacts 42, 43 located one on eachside of the arm 4|. Fivoted on the base 26 are a pair of contact carrying arms 44,15 having contacts 46, 41 carried by the free end portions thereof and which arms 44-, 45'

The contacts 46, 41 cooperate with the contacts 42, 43 respectively to' form a single pole, double throw, electric switch operated by the moisture sensitive member 36. A spring 46 connects th carrying arms 44, 46 on the contact side of the pivot points and urges the contacts 46, 47 toward each other and toward their respective engaging.

contacts 42, 43 carried by the lever arm 4|.

members 49, 56 secured to the base 22, The stop member 5|] is-so adjusted that when -a-relative humidity of a minimum predetermined percentceeds the predetermined minimum percentage one end of an electrical cable 51 which terminates at its other end. at theapparatus to be controlled by the thermostat 23 and humidostat 24. The plug 64 may be removed from the socket 55 when the control apparatus is moved relative to the socket.

The operation of theJcpntrol apparatus is as follows: In winter operation when the relative room humidity is being controlled and when the temperature of the-thermostat 23, adjacent the window pane 2 is below the predetermined minimum temperature of say 44 F. for which it is set.

- and the free end of the-bimetallic element 25 is are spaced on either side of the lever arm 4|.

Movement of the arms thespring 48 towardeach other is limited by spaced, ad ustable stop bent toward the left, .,as seen in Fig. 2, an elec trical circuit is complete between the contacts 21, 26 thereof. These contacts 21, 29 operate to energize a suitable circuit (notshown) by which. contacts 42, 46 of the humidostat 24 are operable to control suitable apparatus governing the admission of water vapor to the roomlair of the controlled residence. Asthe relative 'humidity of the room air atthe'temperature of the window pane 2, as reflected by the air in passageway 22,

increases to a predetermined percentage, the sen sitive member 29 will expand and rotate the lever arm 4| counterclockwise which will allow contact arm 44 to "follow arm 4| and rotate clock wise, as seen in Fig. 2. The stop member 66 will prevent the contact arm 44 at the predetermined setting from further movement in a clockwise direction, and the contacts 42, 46 will separate upon further increase, to say- 98%, to open the electrical circuit between contacts 42, 46 and stop the admission of more water vapor to the room. Upon a decrease in relative humidity, the member 29 contracts and lever arm 4|, under the force. of spring 4|, moves in a clockwise direction, and contacts 42; 46, again engage and complete an electrical circuit therethrough. For any relative humidity below the predetermined setting.

as long as the minimum not exceeded. Upon an toward the right away .circuit winter and summer sash and ,Ihaveasensitive relative humidity is by suitable can-sea the contact will rotate the influence of the lever arm trol, the relative humidity may bemaintained by.

back and forth under IL- Withthisconsuitable equipment, relatively high within the room without any condensation of water vapor from the room air-on the cold window surfaces temperature of 44 F. is increase in temperature above 44 F., the bimetallic element 2' bends from the contact 20 and opens the electrical circuit between contacts 21, 29, which operate I humidostat 2B ineffective. In summer operation humidity is being controlled and when the temperature oi the thermostat a is above the prede\ termined maximum temperature, the free end of the bimetallic element pends toward the right, as seen in 2, and the contacts 2', 3| engage and energize a suitable circuit (not shown) which makes it possible for the contacts ll, 41 to control the operation of a suitable dehumidifye ing apparatus (not shown) to remove the excess undesired moisture from the dence so" that an uncomfortably dampor excess temperature condition is not experienced by the occupants. when the thermostat 23 is subjected to temperatures intermediate minimum and maximum, then the free end of the bimetallic element 25 is not bent enough either to the right. or to the left so that the contacts 21, I! or ll, 81 do not make circuit and the thermostat is in open'circuit position renderin the humidostat 2| ineifective. When the relative humidity decreases below the predetermined maximum percent, then the sensitive member a contracts and allows the-spring ll.- to rotate the lever arm ll clockwise, as seen in Fig. 2. The contact arm 45 rotates counterclockwise and engage t e stop member ",which limits further rotation of the arm ll, and the contacts l1, 41 will separate and open the electrical circuit therethrough. Should the relative humidity increase, the sensitive thrust member I! will expand and rotate the lever arm ll in a counterclockwise direction and contacts ll, 41 will cngfls and the electrical through ,the contacts will be completed.

If the relative humidity further increases, the contactarm ll will be rotated by the lever arm II in a clockwise direction away from stop 40, and

rotate in accordance with the movement of lever arm II as long as the relative humidity remains above the predetermined um percent.

It may now be seen that I have a device which, is compact and operable to control. tus to automatically maintain a residence at ,comiortable, relative humidities without danger of dam- I age caused by excess condensing on cold surfaces. The device is automatically set for human control element. I have .maybeopcnedto to render the operation of the i when the room relative 'certain minimum 'transmittimroomwall side and normally arranged higher than the lower predetermined humidity. It can also be seen that with my humidostatl can maintain a circuit therethrough between relative humidity, and having a circuit which control suitableapparatus upon. the existence of a predetermined relative humidity, and another circuit opened at a second predetermined relative humidity.

This application is a division of my copending application, serial No. 21,353, filed May 14, 1935, for Apparatus for and method of air condition- What I claim and desire to secure by Letters Patent of the United States is:

1. A control device for arrangement withthe inside surface of a wihdow pane or other heat surface comprising an element responsive to an air condition at said inside surface, and a movably mounted supporting means carrying said element and operable in one position to hold said element in close proximity to said inside surface and operable in another position to hold said element out of such proximity and in spaced relation to said inside surface.

2. A. control device for arrangement V window pane or other heat transmitting room wall surface comprising a control means having an element responsive to an air condition, a movably mounted supporting means for said element operable to support said element in 'close proximity-to a window pane and also operable to move said element out of such and yieldable means I element in clou proximity to the window pane.

3. A controidevice for arrangement with a window pane or other heat transmitting room wall surface comprising a casinghaving an open in close proximity to a windowpanc-with its open side disposed toward said window pane, said casing having a passage for rooin air :therethrough, a control means an condition and disposed in the pathof proximity,

within said casing and the room air circulating therethrough, means pivotally supporting said casing,

and means yieldably'urg ns said casing toware.

saidwindowpane.

meansfor securingthe mstothewindow which allows apparatus should itbe desired to open or clean the window, or adjust the the particular construction oitbe switch which is respomive to changes'in relative used in any place wheres. switch-sensitive to desired. and for which an overlapl'iim setting relative humidity switch means second predates mined relative for easv'movement of the -apparatus Due to v humidoatat ll. said.

- humidostat-f-element and midelemenfs when inoperative proximity to said inside surface. said'eiunents humidity and'which may be lnitbcmaintained moat under'onesetoi.conditions termined humidity m "be is.

elqnent, pivotally mounted temperature out olthe ianeof thek .4. A control device for arrangement with the inside surface of a window pane or other heat transmitting roomwall surface comprising a control means, control means, said pivotal supporting means acting to hold said control means when in opersave-position in closeproximity to said inside sm'face, said control means being movable on said pivotal means out of the plane of its operative position. and spring means operable to urge said supporting means toward said inside -15. A control device for arrangement with the insidesurface of a'windowpaneorotherheat room wall surface comprising a responsive element, a humidostat means for n rma mm'fl pos tion i being movable wlth said pivotal mpporflpl means normal operative positim.andmeamyleldablymaintaining-saidsup- "portinamesnsandsaidelanmtsinsaidopera dmiral apparatus fos 'controllim air conand maximum conditions of with a operable to maintain said element responsive to an air- P v pporting means for said eelunent andsaidcontrol me he said supporting member adjacent the cold surface and to hold said from said cold surface.

7.'A control apparatus for location adjacent a window pane of a room comprising a hinge member having a pair of hinged leafs, control means in the room and sensitive to the moisture content of the air after being cooled to substantially the temperature of the window pane, and

supporting member away agavassa directly transmitted to said humidity responsive means so that the latter assumes the temperature condition of said surface, and means for pivotally mounting said device against said surface, said mounting means comprising-a relatively stationary bracket having a pivoted arm projecting therefrom and attached to said deoperative position vice for holding the latter in against said surface, whereby said devicemay be moved toward and away from said surface without disturbing the relatively stationary bracket.

9. A humidity responsive control device comprising-a casing providing a channel having upper and lower openings for gravity air circula- 7 tion, means in said channel and responsive to humidity changes, means securing said responsive means to said casing, control means operspring means attached to said leafs and operable to urge said pane. v 8. A humidity responsive control device comprislng means responsive to humidity changes, operated by said responsive means, mea s whereby the temperature of a surface to w ch the device is attached may be control means against,the window ated by said responsive means, means ,for sub-' jecting responsive means to the temperature of a wall surface, mounting means for said casing and comprising a bracket to' be secured to a relatively stationary'support, an arm pivotally secured tosaid bracket and connected to said casing for operatively holding said casing against said surface and a spring'resisting movement of said casing away from said surface.

PHILIP S. RUSSEL. 

